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ICD-10-CM 2027

ICD-10 code for upper extremity compartment syndrome

T79.A1

Traumatic compartment syndrome of upper extremity

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Compartment syndrome (deep) (posterior) (traumatic) › upper extremity (shoulder, arm, forearm, wrist, hand, fingers)”. Page updated September 29, 2026.

About coding upper extremity compartment syndrome

The ICD-10-CM code for upper extremity compartment syndrome is T79.A1 (Traumatic compartment syndrome of upper extremity).

Within T79.A (traumatic compartment syndrome), T79.A1 is specifically for traumatic compartment syndrome of upper extremity. Related codes cover compartment syndrome, unspecified (T79.A0), of lower extremity (T79.A2), of abdomen (T79.A3) and of other sites (T79.A9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about upper extremity compartment syndrome ICD-10 codes

What is the ICD-10 code for upper extremity compartment syndrome?

T79.A1 — Traumatic compartment syndrome of upper extremity (a header code; report a more specific subcode).

Is T79.A1 billable?

No. T79.A1 is a header code. Report one of its more specific subcodes instead.